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Bresser 88-45001 Manual

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On the nder holder, there are adjusting
screws for the nder (3) (Figure 1): two clamp
screws (black) and one spring-loaded counter
screw (silver). The clamp screws (black) are
to be screwed (equally as far) in so that you
can feel some resistance; the nderscope is
then secure.
Before beginning an observation, it is abso-
lutely necessary that you align the ndersco-
pe – the nderscope and the main telescope
must point to exactly the same position. Here
is the process for alignment:
Take the 20-mm eyepiece, set it into the ze-
nith mirror and aim the main telescope at an
easy to nd, clearly dened earthbound ob-
ject (Figure 11, e.g. church steeple, gable of
a house). The object should be at least 200-
300 meters away. Hone in on the object so
that it is exactly in the middle of the eld of
vision when you look through the eyepiece.
The image reproduced will be upright, but
rotated around its vertical axis (you will see a
mirror-image). In the nder, however, the re-
produced image will be upright and its sides
will not be reversed, as above. Now turn one
of the two clamp screws (right/left) of the n-
derscope while looking continuously through
the nder. Continue to turn until the nder’s
crosshairs are exactly over the position that
corresponds to what you see when you look
through the eyepiece of the main telescope.
Focusing the nderscope:
Turn the front lens mount (23) one to two
rotations to the left. Now you can adjust the
counter-ring (23a) by itself.
Finally, in the same way (by opening and clo-
sing the clamp screws) secure the 20-mm
eyepiece in the zenith mirror.
Be sure that the entrance of the eyepiece (the
end you look into) is facing straight upwards.
This will make observation easier. Alterna-
tively, loosen the clamp screws (21) on the
eyepiece holder and turn the zenith mirror
into this position.
7. Mounting and Adjusting the Finder
Slide the foot of the nder holder (24) com-
pletely into the nder holder base on the te-
lescope tube (Figure 10). The nder holder
will snap into place. Be sure that the objective
lens on the nder is pointing in the direction of
the front tube opening.
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… 19 …


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